Valve coupling



FIG. 1 is a top front perspective view of a valve coupling showing my new design;

FIG. 2 is a top view of the valve coupling;

FIG. 3 is a bottom view of the valve coupling; and,

FIG. 4 is a side elevational view of the valve coupling of FIG. 1.

The broken line showing of a bottle portion in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a valve coupling, as shown and described. 